Re: Form unload - ASP.NET Discussion Boards

ps.srinivasan13-Nov-07 23:10

13-Nov-07 23:10

frnd my requirement is simple,if any one open one form i don't want to allow other person open that same form,how to write code for this scenario?

Re: Form unload

N a v a n e e t h13-Nov-07 23:21

N a v a n e e t h

13-Nov-07 23:21

ps.srinivasan wrote:
frnd my requirement is simple,if any one open one form i don't want to allow other person open that same form

Hope you are speaking about web applications only ! AFAIK, there are not much efficient methods to satisfy this. You can make use of application variables/a database flag indicates somebody opened the page. But big question is how you will reset the value when he finished his visit ? You should rely on some sort of javascript which works on unload. But what will happen if JS is disabled on client's machine ? Your flag status will be still active which prevents further users to the page. So it's not a good solution. Why do you need to implement this ?

If you are planning to implement any of the methods I suggested above, make sure you have a time-out mechanism which updates the flag/application variable to the initial stage.

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Re: Form unload

Christian Graus13-Nov-07 22:48

Christian Graus

13-Nov-07 22:48

How are you maintaining a global variable ? Do you think that's a good idea ? What if two people are using your site and one is one form1, and one is on form2 ? What are you trying to achieve ?

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Re: Form unload

Michael Sync13-Nov-07 22:51

Michael Sync

13-Nov-07 22:51

ps.srinivasan wrote:
I Declared one global variable.

Don't declare the global variable.. You should use "Session" or "Cache".

For example:

Assign "True" to session in WebForm1.

<br />
Session["myvalue"] = "True"

Set "False" this in Webform2.

Session["myvalue"] = "False"

ps.srinivasan wrote:
in which event i want to write the code?

You should write this in From_load of Webform2.
hope it helps.

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

"Please vote to let me (and others) know if this answer helped you or not. A 5 vote tells people that your question has been answered successfully and that I've pitched it at just the right level. Thanks."

Re: Form unload

N a v a n e e t h13-Nov-07 22:58

N a v a n e e t h

13-Nov-07 22:58

Michael Sync wrote:
You should write this in From_load of Webform2.

It would be better if referrer also checked to ensure it comes from webform1. Else if anyone directly took webform2, value will be set to false.

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Re: Form unload

Michael Sync13-Nov-07 23:06

Michael Sync

13-Nov-07 23:06

N a v a n e e t h wrote:
It would be better if referrer also checked to ensure it comes from webform1

Yeah. I agree..

Re: Form unload

ps.srinivasan13-Nov-07 23:11

ps.srinivasan

13-Nov-07 23:11

rnd my requirement is simple,if any one open one form i don't want to allow other person open that same form,how to write code for this scenario?

Re: Form unload

Christian Graus13-Nov-07 23:16

Christian Graus

13-Nov-07 23:16

This is a bizarre requirement for a web app. Your problem is, you cannot know if the first person has left the page. The best way to handle this is to store what pages are 'in use' in the database, because you also need to store the time/date they became in use, and impliment a timeout so that the user loses the page after a while. Otherwise, I can browse to your site ( and I assume I'd be one of only 2-3 people worldwide doing so, for your requirement to not make the site useless ), turn off my PC and your site is broken.

Re: Form unload

Michael Sync13-Nov-07 23:41

Michael Sync

13-Nov-07 23:41

I would like to add a few things that might work for you...

I think that Session State is based on the user, right?

- As Christ said, you should store the pageid and status "in use" in the database.
- If you move to other page then change the pageid.
- Check whether a particular page is in-use or not in every page_load.
- Use "Session" in your page. (you wanna say that you have nothing to store in the Session variable? anyway, use it.. otherwise, you won't get "Session_End".. )
- Delete the record ("pageid" and "in use") in Session_End event.
- Don't forget to set "Inproc" in web.config..

I think that it might work.. but it is better if you can change your requirement..

open file

venky45613-Nov-07 22:20

venky456

13-Nov-07 22:20

how to open file ion newpage when we click the hyperlink on datagrid data.
Regards
venkat

venkat

Re: open file

N a v a n e e t h13-Nov-07 22:34

N a v a n e e t h

13-Nov-07 22:34

Use target=_blank for the hyperlink.

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Re: open file

venky45613-Nov-07 23:19

venky456

13-Nov-07 23:19

open the file in another system in same network.

venkat

Re: open file

N a v a n e e t h13-Nov-07 23:23

N a v a n e e t h

13-Nov-07 23:23

venky456 wrote:
open the file in another system in same network.

Using ASP.NET it's not possible,.

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how to use paypal controls in asp.net for transaction [modified]

gopal_Pandey13-Nov-07 22:14

gopal_Pandey

13-Nov-07 22:14

hello friends,

I am using paypal controls in my project and i am having two problems which i don't think it is solvable by coding.

the first problem is:

when after clicking on "Buy Now" button of paypal my IE blocks the cookies of the paypal site.when i unblock the site cookies it works fine but for this i am using the Internet option->privacy->unblock the sites.....

but what i want is that any way to solve this problem in asp.net..................

The second problem is:

when paypal site open, it open in a child frame.After completing the transaction process, when i click another link of my parent frame then it shows in the new frame which is not allowed so what i think is to open the paypal site in new window.

so is there any property of "Buy Now" button which open paypal into the new window........

if you have any way to solve this problem, then please reply me. on mail or on forums....

help will be highly appreciable.......

thanks in advance....

bye...

-- modified at 7:51 Thursday 15th November, 2007

Re: how to use paypal controls in asp.net for transaction

gopal_Pandey23-Nov-07 1:32

gopal_Pandey

23-Nov-07 1:32

I have solved out this problem
i can transact with my paypal account and my code is working properly..
if anyone wants the solution then feel free to contact me....
bye...
thanks everyone for looking this problem.
Big Grin | :-D

problem to read data

Deepak Nigam13-Nov-07 22:07

Deepak Nigam

13-Nov-07 22:07

Hello friends,

I have a table with fields subject, having different values.
i want to show these values on the different labels.

Such as if i am having subject as math, eng, science etc..
Label1.text should be math.
Label2.text should be eng.
Label3.text should be science.

plzz help me there may be any no of subjects.
How to do this????

Thanks in advance...........

Deepak Nigam

Re: problem to read data

Christian Graus13-Nov-07 22:16

Christian Graus

13-Nov-07 22:16

If the subjects are coming from a table, the most likely way to render this is with a repeater.

Drop down list box [modified]

ps.srinivasan13-Nov-07 20:52

ps.srinivasan

13-Nov-07 20:52

hello frnd
I have some value in drop down list box(like 1,2,3,4). if i change the selected text value i want to show month (like jan,feb,..) value in text box,which event i want to write code?

Re: Drop down list box

Michael Sync13-Nov-07 21:07

Michael Sync

13-Nov-07 21:07

onchange event.

dropdownload.Attribute.Add("onchange", "yourJSfunction();")

Re: Drop down list box

Sonia Gupta13-Nov-07 21:27

Sonia Gupta

13-Nov-07 21:27

initially i was using the selectedindexchange funciton , now it improved the access time .Thanks...

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Re: Drop down list box

Vasudevan Deepak Kumar13-Nov-07 21:29

Vasudevan Deepak Kumar

13-Nov-07 21:29

Sonia Gupta wrote:
now it improved the access time

True. It is because now you have overcome and have avoided a costly server roundtrip and doing it on the clientside itself. Smile | :)

Vasudevan Deepak Kumar
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Re: Drop down list box

Sonia Gupta13-Nov-07 21:31

Sonia Gupta

13-Nov-07 21:31

Yes sir

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Re: Drop down list box

Kasi Viswanathan13-Nov-07 21:19

Kasi Viswanathan

13-Nov-07 21:19

ps.srinivasan wrote:
which event i want to write code?

DropDownList1_SelectedIndexChanged

if (DropDownList1.SelectedValue == "1")<br />
            {<br />
                TextBox1.Text = "Jan";<br />
            }

eval and databinder.eval

Sonia Gupta13-Nov-07 20:50

Sonia Gupta

13-Nov-07 20:50

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{

if (e.Row.RowType == DataControlRowType.DataRow)
{
quantityTotal += ((int)(Eval("Quantity")));
priceTotal += ((decimal)(Eval("SubTotal")));

}
}
there is a compilation mistake.

i think i should use the <%# (inline binding) along with this Eval("Quantity") at opening and closing
how to do this

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Re: eval and databinder.eval

InsDev13-Nov-07 20:58

InsDev

13-Nov-07 20:58

use like this
<%# Eval("Quantity") %>

Devjit Das.

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